Model-based correction of finite aperture effect in photoacoustic tomography.

@article{Li2010ModelbasedCO,
  title={Model-based correction of finite aperture effect in photoacoustic tomography.},
  author={Meng-Lin Li and Yi-Chieh Tseng and Chung-Chih Cheng},
  journal={Optics express},
  year={2010},
  volume={18 25},
  pages={26285-92}
}
In this study, we adopt a model-based correction method to reduce the finite aperture effect in photoacoustic tomography (PAT)--the tangential resolution deteriorates as the imaging point moves away from the circular scanning center. Such degradation in resolution originates from the spatial impulse responses (SIRs) of the used finite-sized unfocused transducer. Based on a linear, discrete PAT imaging model, the proposed method employs a spatiotemporal optimal filter designed in minimum mean… CONTINUE READING